Extra ordinary WeaponsSelect view character during the game, and when the 'view which?'prompt appears, push and hold in order, Left, A, C. Release at the same time and you'll summon super characters who will trade you for extraordinary weapons.

How to cast spells in dungeons where spells aren't supposed to workThere are a couple of places (dungeons) in the game where the casting of spells has been disabled to make the game harder to beat. You can overcome this limitation by sleeping. This is especially useful for using teleportation in these dungeons to get to a particular place in seconds!

Bypassing Mandagual's KeepThe road to the Luxus Palace is guarded by Mandagual's Keep, where you need to fight a fairly challenging battle to get past. You can bypass this fight completely by turning around and walking the road backwards; the keep only ''triggers'' if you face it. This allows you to get in the Luxus Palace far earlier and train up low level characters quickly on the Mystic Clowns in the back of the throne room. This same backwards walking trick can be used to bypass various other difficult encounters, but this is probably the most useful spot.